Fuel-supply for gas-engines.



yE. H. BATES. FUEL sUPPLYfoR GAS 'ENGINES'. v V APPLICATION FILED oofiz, 190s. BENEWED MAY 4. E912. 1,05 1,364, Patented Jan. 21,"1913i I v I a y I E .i E

F. H. BATES. 'FUEL SUPPLY FOR GAS'BNGINES. APPLICATION FILED octmz, 190s. RBNEWBD MAY 4,' 1912.

1,051,364. Patented Jan. 21, i913.

2 SHEBBS-SHEET 2.

'be employe ,the leak fBO valve, controlled as hd* be admitted into the are conducted by a-pipe A2 that leads to .theintake port of the engine and may be shut oif when desired by means of a valve a3. The final volume of air required to form 5' a properly combustive mixture is admitted 'in the apparatus illustrated througha valve-controlled branch A* that preferably enters pipe A2 near the governor valve, presently to be described, and indeed may be directly connect-ed therewith, upon suitably modifying its construction to this end. As usual in-engines of the sort in hand, the supply of fuel, seen to consist in the 'present instance of oil vapor, is regulated by a valve C actua-ted by the engine governor. This valve illustrated in vertical section in Fig. 2, is of the lift valve type, 'and is made up of two 'members c c fitted to similarly outwardly opening ports c c of the inner valve chamber e2 are provided. Such inner valve chamber is connected see Fig. 3) with the gas line A2 leading from the generator, and the amountl of gas supplied the engine will obviously-be determined by movement of the valve, such movement being had through suitable connections (not shown) from the engine governor to the valve stem C as will be readily understood. '30 In addition to the mainv gas line heretofore constituting the only source of supply l y of-gas to the engine, I connect with the outer vor main valve casing C a separate line or duct A3 that communicates directly with the outer chamber b of the producer, as shown in the Fig. l.. As in the'cainf line A2, so here, f provision for an additional admixture of air is madethrough a valve-controlled branch A", although it is contemplated that the fuel supplied through this pipe should be richer than normal. This line'A3 is of considerably smaller size than the mainline, and referably includes a dial cock a, where y the flow of gas, or gaseous mixture, there- "through may be variously determined, and also a spring controlled valve a adapted to open 'only upomn `the existence of a predetermined vacuum in the valve chamber C. he valve a5, it will bel understood, is'not 'ofdesigned or required to sustain anyvof` the back pressure from engine that being `wholly v cut off by the regular intake valve, ad nor p will it alwa s be necessary that such a valve of fuel pastcock af* 815 being intended to be small at all events.

e operation of my improved gas supply y should be obvious from the preceding description. Irrespective of the volume 0f fuel admittedthroughthe regular throttle it is, by the engine governor to vary such supplyY with the varying vspeed of the engine, there will at all times explosive chamber of v.,f the engine through the auxiliary fuel sup- "j ply, a, small pre-determined volume of fuel,

directed valve seats wherewith the fuel supply,

-which volume may be variedV by the dial cock to -suit the occasion. Adjustment of this valve, however, will ordinarily be necessary only at the time of installation, or when the character of the oil in the producer is changed, so that the same result couldbe secured by a proper calibration of the duct, Aand theV valve entirely omitted. Where n cont-rol valve a5 is employed a small amount of fuel will always be provided, irrespective of whether the governor valve closes down so-as to shut o the regular supply of fuel`entirelyor not (such entire shutting oft `ing apt to occur whenever the valve chatters} and I .always have the assurance of a 4suttciencyof fuel to prevent mis-iiringgjgfflig result vis much more even and smooth`operation on the part of the engine, as has been fully demonstrated in actual practice. 'Where a valve, as a'is uti,lizedsuchv auxiliary `supply of course become available only when the governor valve so nearly closes as to -cause a perceptible lowering ofpressure inthevalve chamber on the suction stroke of the engine piston. It should be remarked that thisv auxiliary fuel supplyserves'equally well to overcome any vexcess of air in the .regular such air having been observed to predominateund-er certain circumstances when the throttle is nearly closed.

Other modes of applying the principle ofmyv invention may be employed instead of the one explained, change being made as reguards the mechanism herein disclosed, provided the-means stated by an` `of the following claims or the equlva ent stated means be employed.

I therefore particularly point out-and dist.V

tinctly claim as my.invent1on:-'- Y 1. The combination with an explosive engine and fuelsupply therefor, oftwo sepa-1 rate connections between said engine and"`A exs.

supply, one of said connections' being l ternally controlled and the other automatically supplying fuel upon an increase in the' suction effect ofthe engine. E 2. The'combination with an explosive engine and fuel supply therefor, of two sepa-f rate connections between said engine and supply, and an externally operable valve -of such" adapted to control one'/ of said connections,

the other of said connections-being directly` responsive to the varying suction effect ci the engine in supplying fuel thereto.

3. The combination v gine ,of separate means for supplying fuel'- thereto, means for controlling one of the saidV fuel supply means, and automatic means for permitting the other fuel supply means tqsupplyfuel to the said engine upon an in, crease of suction effect of said engine irre-ts'pectivel of the condition of the supply means with whichsaid controlling means isv associated. l

l 12o with an explosive en-,ff

l l l I 1 fuel through one of said connections, and

means acting,- automatically to supply fuel through the otherof said connections upon an increase in suction effect of the engine.I

5. The combination with an eXplosiveengine and fuel supply therefor oftwo separate connectionsbetween said engine and supply, externally operable means for controlling the passage of fuel through one of said connections, and automatically acting means associated with the other of said connections to permit the passage of fuel through said other connection upon an-increase in the suction effect of the engine.

6. The combination with an explosive engine and a source of fuel supply therefor of two separate connections between said engine and said source of supply, a valve adapted to control one of said connections, means for controlling the rate of flow. through the other of said connections, and additional means acting automatically upon an increase of suction effect in said engine to permit the passage of fuel through said other connection.

7. The combination of an explosive engine, a source of fuel supply therefor, a main supply connection between said source and said engine, a valve for controlling the said connection, a supplemental fuel supply connectionbetween the said source and the said engine, and means interiorl-y of the said supplemental connection Which'is responsive to variations of pressurein the said engine for permitting a supply of fuel therethrough irrcspective of the condition of the first-named connection.

il). The combination vof an explosive en gine, a source of fuel supply therefor, a main fuelzsupply connection between said source and said engine, a valve for control-` ling the said connection, 4a supplemental fuel supply connection ybetween the said sourcel and the said'engine, means for regulating-the'rate of flow of said fuel through4 said supplemental connection, and mea-ns in-"r teriorly of said supplemental connection responsive Vto variations of pressure in the said engine for permitting a supply of' fuel therethrough irrespective ofthe condition of the first-named connection.

9. The combination with an explosive engine and a fuelsupply therefor, of two separate connections between said engine andgsupply, a valve adapted to control one of said connections, and a spring-controlled valve in the other of said connections, said last-named valve opening to supply fuelto the engine under vthe increasing suction effect of said engine as said first valve,ap preaches a closed position.

10. VThe combination with an explosive'engine and a fuel supply therefor, of two separate connections between said engine and supply, a valve adapted to control one of said connections, a spring-controlled valve in the other of said connections, said lastnamed valve opening to supply fuel to the engine under the increasing suction effeet of said engine asl said first valve approaches a closed position, and a dial cock for limiting the amount of fuel thus supplied through said spring-controlled valve.

Signed by methis' 8th day of October,

FRANK n, BATES,

l Attested by- MARY GLADWELL, vJive. F. OBERL] N.

Copies `of this patent may be obtained for ve cents each, by addressing the Commissioner .of Patents,

Washington, D. C. 

